Sharp CDDK-2500-W, CDDP-2500-W Service manual

CD-DP2500W

CD-DP2500W/DK2500W

SERVICE MANUAL

No. S4034CDDP2500

CD-DP2500W

CD-DP2500W Mini Component System consisting of CDDP2500W (main unit), CP-DP2500 (front speakers), GBOXS0038AWM1 (centre speaker) and GBOXS0039AWM1 (surround speakers).

CD-DK2500W

CD-DK2500W Mini Component System consisting of CDDK2500W (main unit), CP-DP2500 (front speakers), GBOXS0038AWM1 (centre speaker) and GBOXS0039AWM1 (surround speakers).

CD-DK2500W

DIFFERENCE BETWEEN CD-DP2500W AND CD-DK2500W

SECTION CD-DP2500W CD-DK2500W

KARAOKE Non Used

Manufactured under license from Dolby Laboratories Licensing Corporation. DOLBY, the double-D symbol and "PRO LOGIC" are trademarks of Dolby Laboratories Licensing Corporation.

• In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used.

CONTENTS

SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2

VOLTAGE SELECTION..................................................................................................................................................... 2

SPECIFICATIONS ............................................................................................................................................................. 3

NAMES OF PARTS ........................................................................................................................................................... 4

OPERATION MANUAL ...................................................................................................................................................... 8

DISASSEMBLY.................................................................................................................................................................. 9

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 12

TEST MODE .................................................................................................................................................................... 13

ADJUSTMENT ................................................................................................................................................................. 14

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 16

BLOCK DIAGRAM ........................................................................................................................................................... 17

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD..............................................................................................20

VOLTAGE ........................................................................................................................................................................ 42

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 43

TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 44

FUNCTION TABLE OF IC................................................................................................................................................ 48

FL DISPLAY......................................................................................................................................................................54

REPLACEMENT PARTS LIST/EXPLODED VIEW

Page

SHARP CORPORATION

This document has been published to be used for after sales service only. The contents are subject to change without notice.

CD-DP2500W/DK2500W

SAFETY PRECAUTION FOR

SERVICE MANUAL

Precaution to be taken when replacing and servicing the Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam

(1) When the cabinet has been removed, the power is turned

on without a compact disc, and the Pickup is on a position outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.

(2) The Laser Power Output of the Pickup inside the unit and

replacement service parts have already been adjusted prior to shipping.

(3) No adjustment to the Laser Power should be attempted

when replacing or servicing the Pickup.

(4) Under no circumstances look directly into the Pickup Lens

at any time.

(5) CAUTION - Use of controls or adjustments, or performance

of procedures other than those specified herein may result in hazardous radiation exposure.

CAUTION

● This Mini Component System is classified as a CLASS 1

LASER product.

● The CLASS 1 LASER PRODUCT label is located on the

rear cover.

● Use of controls, adjustments or performance of proce-

dures other than those specified herein may result in hazardous radiation exposure.

As the laser beam used in this compact disc player is harmful to the eyes, do not attempt to disassemble the cabinet. Refer servicing to qualified personnel only.

Laser Diode Properties

Material: GaAIAs Wavelength: 780 nm Emission Duration: continuous Laser Output: max. 0.6 mW

Illustration:CD-DP2500W

VOLTAGE SELECTION

The voltage selector is located on the AC voltage selector box. If adjustment is necessary, ensure to remove plug of AC cord from AC socket and use a screwdriver in order to turn the selector in either direction. The correct voltage figure is displayed in the window below to the adjustment screw.

QACCB0006AW00

QACCE0010AW00

QACCJ0007AW00

Figure 2 POWER SUPPLY CORD

– 2 –

QACCA0003AW00

QPLGA0003AWZZ QPLGA0004AWZZ

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

SPECIFICATIONS

● General

Power source: AC 110/127/220/230-240 V, 50/60 Hz Power consumption: 155 W Dimensions: Width; 270 mm (10-5/8")

Height; 330 mm (13") Depth; 332 mm (13-1/16")

Weight: 8.9 kg (19.6 lbs.)

● Amplifier section

Output power: Front speakers;

MPO; 200 W (100W + 100 W) (10 % T.H.D.) RMS; 120 W (60 W + 60 W) (10 % T.H.D.) RMS; 96 W (48 W + 48 W) (0.9 % T .H.D.)

Centre speaker;

MPO; 50 W (10 % T.H.D.) RMS; 30 W (10 % T.H.D.) RMS; 24 W (0.9 % T.H.D.)

Surround speakers;

MPO; 50 W (25 W + 25 W) (10 % T.H.D.) RMS; 30 W (15 W + 15 W) (10 % T.H.D.) RMS; 24 W (12 W + 12 W) (0.9 % T.H.D.)

Output terminals: Front speakers; 6 ohms

Centre speaker; 6 ohms Surround speakers; 12 ohms Headphones; 16-50 ohms (recommended; 32 ohms) CD digital output (optical)

Input terminals: Video/Auxiliary (audio signal) × 2; (CD-DP2500W) 500 mV/47 kohms

Input terminals: Video/Auxiliary (audio signal) × 2; (CD-DK2500W) 500 mV/47 kohms

Microphone 1/2; 1 mv/600 kohms

● Compact disc player section

Type: 3-disc multi-play compact disc player Signal readout: Non-contact, 3-beam semiconductor

laser pickup

D/A converter: 1-bit D/A converter Frequency response: 20 - 20,000 Hz Dynamic range: 90 dB (1 kHz)

CD-DP2500W/DK2500W

● Tuner section

Frequency range: FM; 88-108 MHz

AM; 531-1,602 kHz

● Cassette deck section

Frequency response: 50-14,000 Hz (Normal tape) Signal/noise ratio: 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/playback)

Wow and flutter: 0.3 % (WRMS)

● Front speaker section

Type: 3-way type [13 cm (5-1/4") woofer,

5 cm (2") tweeter and super tweeter]

Maximum input power: 120 W Rated input power: 60 W Impedance: 6 ohms Dimensions: Width; 240 mm (9-1/2")

Height; 330 mm (13") Depth; 255 mm (10-1/16")

Weight: 3.9 kg (8.5 lbs.)/each

● Centre speaker section

Type: 10 cm (4") full-range speaker Maximum input power: 60 W Rated input power: 30 W Impedance: 6 ohms Dimensions: Width; 260 mm (10-1/4")

Height; 140 mm (5-1/2") Depth; 155 mm (6-1/8")

Weight: 0.9 kg (2.0 lbs.)

● Surround speaker section

Type: 10 cm (4") full-range speaker Maximum input power: 30 W Rated input power: 15 W Impedance: 12 ohms Dimensions: Width; 200 mm (7-7/8")

Height; 93 mm (3-11/16") Depth; 170 mm (6-3/4")

Weight: 0.5 kg (1.1 lbs.)/each

Specifications for this model are subject to change without prior notice.

– 3 –

CD-DP2500W/DK2500W

Front panel [CD-DP2500W]

1. (CD) Disc Tray

2. Extra Bass Indicator

3. Spectrum Analyzer/Volume Level Indicator

4. (CD) Disc Number Indicators

5. (CD/TUNER) Memory Indicator

6. (CD) Pause Indicator

7. (TAPE 2) Record Indicator

8. (CD) Play Indicator

9. (CD) Music Schedule Indicators

0. (CD) More Tracks Indicator

11. Sleep Indicator

12. FM Stereo Mode Indicator

13. (TAPE) Reverse Mode Indicator

14. (TAPE 2) Reverse Play Indicator

15. (TAPE 1) Play Indicator (TAPE 2) Forward Play Indicator

16. (CD) Repeat Indicator

17. FM Stereo Indicator

18. Timer Record Indicator

19. Timer Play Indicator

NAMES OF PARTS

20. Memory/Set Button

21. (CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Fast Wind Button

22. Bypass Button

23. (CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

24. Normal Button

25. Phantom Button

26. Timer Set Indicator

27. On/Stand-by Button

28. Clock Button

29. Timer/Sleep Button

30. Function Selector Buttons

31. Dimmer Button

32. Volume Control

33. Equalizer Mode Selector Button

34. (CD) Disc Number Select Buttons

35. Headphone Socket

36. Tuning and Time Up/Down Buttons

37. (TAPE 2) Record Pause Button

38. (TAPE 2) Reverse Play Button

39. (CD/TAPE) Stop Button

40. (TAPE 2) Reverse Mode Button

41. (CD) Play/Repeat Button (TAPE 1) Play Button (TAPE 2) Forward Play Button

42. Extra Bass/Demo Mode Button

43. (CD) Disc Skip Button

44. (CD) Open/Close Button

45. (TAPE 1) Cassette Compartment

46. (TAPE 2) Cassette Compartment

– 4 –

Front panel [CD-DK2500W]

1. (CD) Disc Tray

2. Extra Bass Indicator

3. Spectrum Analyzer/Volume Level Indicator

4. (CD) Disc Number Indicators

5. Karaoke Maker Indicator

6. (CD/TUNER) Memory Indicator

7. (CD) Pause Indicator

8. (TAPE 2) Record Indicator

9. (CD) Play Indicator (CD) Music Schedule Indicators (CD) More Tracks Indicator

12. Sleep Indicator

13. FM Stereo Mode Indicator

14. (TAPE) Reverse Mode Indicator

15. (TAPE 2) Reverse Play Indicator

16. (TAPE 1) Play Indicator (TAPE 2) Forward Play Indicator

17. (CD) Repeat Indicator

18. FM Stereo Indicator

19. Timer Record Indicator

20. Timer Play Indicator

CD-DP2500W/DK2500W

21. Memory/Set Button

22. (CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Fast Wind Button

23. Bypass Button

24. (CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

25. Normal Button

26. Phantom Button

27. Timer Set Indicator

28. On/Stand-by Button

29. Clock Button

30. Timer/Sleep Button

31. Function Selector Buttons

32. Dimmer Button

33. Volume Control

34. Equalizer Mode Selector Button

35. (CD) Disc Number Select Buttons

36. Headphone Socket

37. Tuning and Time Up/Down Buttons

38. (CD) Disc Skip Button

39. (CD) Open/Close Button

40. (TAPE 2) Record Pause Button

41. (TAPE 2) Reverse Play Button

42. (CD/TAPE) Stop Button

43. (TAPE 2) Reverse Mode Button

44. (CD) Play/Repeat Button (TAPE 1) Play Button (TAPE 2) Forward Play Button

45. Extra Bass/Demo Mode Button

46. Microphone Sockets

47. Microphone Level Controls

48. (TAPE 1) Cassette Compartment

49. (TAPE 2) Cassette Compartment

– 5 –

CD-DP2500W/DK2500W

Rear panel

1. AC Voltage Selector

2. AC Power Lead

3. CD Digital Output Socket

4. FM 75 Ohms Aerial Terminal

5. FM Aerial Earth Terminal

6. AM Loop Aerial Input Socket

7. Span Selector Switch

8. Video/Auxiliary (Audio Signal) Input Sockets

9. Front Speaker Terminals

10. Centre Speaker Terminals

11. Surround Speaker Terminals

Front speaker

1. Super Tweeter

2. Tweeter

3. Woofer

4. Bass Reflex Ducts

5. Speaker Wire

Centre speaker

1. Full-Range Speaker

2. Speaker Wire

Surround speaker

1. Full-Range Speaker

2. Speaker Wire

– 6 –

CD-DP2500W/DK2500W

Remote control [CD-DP2500W]

1. Remote Control Transmitter LED

2. Dolby Pro Logic Surround Mode Button

3. Test Tone Button

4. Centre Level Buttons

5. Surround Level Buttons

6. Balance Control Buttons

7. (CD) Disc Skip Button

8. (CD) Clear Button

9. (CD) Memory Button

10. (CD) Random Button

11. (TAPE 2) Record Pause Button

12. (CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Fast Wind Button

13. (CD) Pause Button

14. (CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

15. Equalizer Mode Selector Button

16. (TAPE 2) Reverse Play Button

17. (CD/TAPE) Stop Button

18. (CD) Play/Repeat Button (TAPE 1) Play Button (TAPE 2) Forward Play Button

19. Function Selector Buttons

20. On/Stand-by Button

21. Extra Bass Button

22. Volume Up/Down Buttons

Remote control [CD-DK2500W]

1. Remote Control Transmitter LED

2. Karaoke Mode Button

3. Vocal Replacer Button

4. Dolby Pro Logic Surround Mode Button

5. Test Tone Button

6. Echo Level Up/Down Buttons

7. Centre Level Buttons

8. Surround Level Buttons

9. Balance Control Buttons

10. (CD) Disc Skip Button

11. (CD) Clear Button

12. (CD) Memory Button

13. (CD) Random Button

14. (TAPE 2) Record Pause Button

15. (CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Fast Wind Button

16. (CD) Pause Button

17. (CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

18. Equalizer Mode Selector Button

19. (TAPE 2) Reverse Play Button

20. (CD/TAPE) Stop Button

21. (CD) Play/Repeat Button (TAPE 1) Play Button (TAPE 2) Forward Play Button

22. Function Selector Buttons

23. On/Stand-by Button

24. Extra Bass Button

25. Volume Up/Down Buttons

– 7 –

CD-DP2500W/DK2500W

SETTING THE CLOCK

In this example, the clock is set for the 24-hour (0:00) system.

1

Press the ON/STAND-BY button to enter the stand-by mode.

2

Press the CLOCK button.

3

Within 5 seconds, press the MEMORY/SET button.4Press the TUNING/TIME (

or ) button to select the time

display mode.

“0:00” →The 24-hour display will appear.

(0:00 - 23:59)

“AM 0:00” →The 12-hour display will appear.

(AM 0:00 - PM 11:59)

“AM 12:00” →The 12-hour display will appear.

(AM 12:00 - PM 11:59)

● Note that this can only be set when the unit is first in-

stalled or it has been reset.

5

Press the MEMORY/SET button.6Press the TUNING/TIME (

or ) button to adjust the hour.

● Press the TUNING/TIME ( or ) button once to ad-

vance the time by 1 hour. Hold it down to advance con-

tinuously.

● When the 12-hour display is selected, “AM” will change

automatically to “PM”.

7

Press the MEMORY/SET button.8Press the TUNING/TIME (

or ) button to adjust the min-

utes.

● Press the TUNING/TIME (

or

) button once to ad-

vance the time by 1 minute. Hold it down to change the

time in 5 minute intervals.

● The hour setting will not advance even if minutes advance

from “59” to “00”.

9

Press the MEMORY/SET button.

● The clock starts operating from “0” second.

(Seconds are not displayed.)

And then the clock display will disappear after a few sec-

onds.

To see the time display:

Press the CLOCK button.

● The time display will appear for about 5 seconds.

Note:

● The clock display will flash on and off at the push of the

CLOCK button when the AC power supply is restored after

a power failure occurs or after the AC power lead is discon-

nected.

If this happens, follow the procedure below to change the

clock time.

To change the clock time:

1 Press the CLOCK button.

2 Within 5 seconds, press the MEMORY/SET button.

3

Perform steps 6 - 9 above.

To change the time display mode:

1 Perform steps 1 - 2 in the section “RESETTING THE MI-

CROCOMPUTER”.

2

Perform steps 1 - 9 above.

(Main unit operation)

RESETTING THE MICROCOMPUTER

Reset the microcomputer under the following con-

ditions:

● To erase all of the stored memory contents (clock and timer

settings, and tuner and CD presets).

● If the display is not correct.

● If the operation is not correct.

1

Press the ON/STAND-BY button to enter the stand-by mode.

2

Whilst pressing down the 0 button and the X-BASS/ DEMO

button, hold down the ON/STAND-BY button for at least 1

second.

● “CLEAR AL” will appear.

Caution:

● The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and

CD presets.

OPERATION MANUAL

Illustration:CD-DP2500W

– 8 –

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:

1. Take cassette tape and compact disc out of the unit.

2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.

3. Take off nylon bands or wire holders where they need be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling.

4. Take suffcient care on static electricity of integrated circuits and other circuits when servicing.

CD-DP2500H/DK2500W

STEP

10

11 Turntable 1. Hook....................... (L1) x2 10-5

12 Disc Tray 1.

13 CD Servo PWB 1. Screw ..................... (N1) x1 11-1

14 CD Mechanism 1. Hook ....................... (P1) x2 11-2

15

REMOVAL PROCEDURE FIGURE

1 Top Cabinet 1. Screw ..................... (A1) x4 9-1

2 Side Panel 1. Screw ..................... (B1) x8 9-1

(Left/right)

3 CD Player Unit/ 1. Turn on the power supply, 9-2

CD Tray Cover open the disc tray, take out

the CD cover, and close. (Note 1)

2. Screw ..................... (C1) x1

3. Hook....................... (C2) x3

4. Hook....................... (C3) x2

5. Socket .................... (C4) x3

4 Rear Panel 1. Screw ..................... (D1) x9 9-2

5 Main PWB 1. Screw ..................... (E1) x3 9-2

6

Power Supply PWB

7 Front Panel 1. Screw ..................... (G1) x2 10-3

8 Karaoke PWB 1. Screw..................... (H1) x2 10-4

(CD-DK25000W ONLY)

9 Display PWB/ 1. Screw .....................

Headphones PWB Tape Mechanism

(Note 2) 2. Hook....................... (N2) x2

Loading Motor PWB

2. Socket .................... (E2) x2 10-3

(CD-DP25000W)

2. Socket .................... (E2) x3

(CD-DK25000W)

3. Flat Cable .............. (E3) x1

4. Lug Wire................. (E4) x1

5. Socket .................... (E5) x1

1. Screw ..................... (F1) x2 10-3

2. Socket .................... (F2) x5

3. Flat Wire................. (F3) x1 10-4

(J1) x15

2. Flat Cable .............. (J2) x1

1. Open the cassette holder 10-4

2. Screw ..................... (K1) x5

2. Cover ..................... (L2) x1

Turn fully the lock lever in the

arrow direction.

2.

While holding the lock lever,rotate the cam gear until the cam gear rib engages with the clamp lever.

3.

Push the slide holder backward to

engage the claw with the groove and remove it in the direction

of the arrow. ..............

3. Socket .................... (N3) x4

2. Hook....................... (P2) x3

1. Hook....................... (Q1) x5 11-2

(M1) x6

10-4

10-1

10-2

10-6

CD-DP2500W/DK2500W

Note 1:

How to open the changer manually. (Fig. 10-1)

1. In this state, turn fully the lock lever in the arrow direction through the hole on the loading chassis bottom.

2.

While holding the lock lever, rotate the cam gear anticlockwise

until the cam gear rib engages with the clamp lever.

3. After that, push forward the CD slide holder.

Note 2:

1. After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of the connector so as to protect the optical pickup from electrostatic damage.

Note 3:

1. Be careful not to break the claw of the CD mechanism.

2. When fining back the cam gear assembly, let it lock by front movement.

CD-DP2500H/DK2500W

– 9 –

Side Panel (Right)

(B1)x2 ø3x10mm

(B1)x4 ø3x10mm

(C3) x1

Pull

(C1)x1 ø3x10mm

(D1)x7 ø3x10mm

Rear Panel

(A1)x2 ø3x12mm

CD Servo PWB

Rear Panel

Figure 9-1

(C4)x3

Main PWB

Figure 9-2

Top Cabinet

(B1)x2 ø3x10mm

DC Tray Cover

1

(D1)x2 ø3x10mm

(Fig. 10-2)

(A1)x2 ø3x12mm

Side Panel (Left)

(C2) x3

1

2

CD Player Unit

(C3)x1

(E1)x3 ø3x10mm

CD-DP2500W/DK2500W

Figure 10-1

LOCK LEVER

CLAMP LEVER

CAM GEAR RIB

Karaoke PWB

(H1)x1 ø3x10mm

(J1)x14 ø3x10mm

Tape Mechanism

(K1)x5 ø3x10mm

(J1)x1 ø3x10mm

CD-DK2500W ONLY

(J2)x1

Display PWB

(F3)x1

Headphones PWB

Open

Cassette Holder

Figure 10-4

(L2) x1

Turntable

(E5)x1

CD-DK2500W ONLY

(E2)x1

Power Supply PWB

(F2)x1

(F2)x4

Tape Mechanism

(E4)x1

(E3)x1

Figure 10-2

(F1)x1 ø3x6mm

(F1)x1 ø3x10mm

(G1)x2 ø3x10mm

Power Supply PWB

Main PWB

(E2)x1

(L1) x2

Disc Tray

CD Player Unit

Figure 10-5

(M1) x3

3

2

1

(M1) x3

Figure 10-3

Figure 10-6

– 10 –

CD-DP2500W/DK2500W

Screw Driver

Woofer

(A1)x1

(B1)x4

Ø4x12mm

(C1)x2

Ø3x10mm

(D1)x2

Ø3x10mm

(N1)x1 ø3x8mm

(N2) x2

(N3) x2

CD Servo

PWB

Figure 11-1

CD Player

Base

CD Mechanism

(P1) x1

(P2) x3

(P1) x1

Figure 11-2

Loading Motor PWB

(Q1) x5

CP-DP2500

STEP

REMOVAL PROCEDURE FIGURE

1 Front Panel 1. Front Panel ............ (A1) x1 11-3

2 Woofer 1. Screw ..................... (B1) x4 11-3

4 Tweeter 1. Screw .................... (C1) x2 11-3

5 Super Tweeter 1. Screw .................... (D1) x2 11-3

CP-DP2500

Figure 11-3

– 11 –

CD-DP2500W/DK2500W

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 7 and 10 of the disassembly method to remove the tape mechanism.

How to remove the record/playback and erase heads (TAPE 2) (See Fig. 12-1)

1. When you remove the screw (A1) x 2 pcs., the recording/ playback head and three-dimensional head of the erasing head can be removesd.

How to remove the playback head (TAPE 1) (See Fig. 12-2)

1. When you remove the screw (B1) x 2 pcs., the playback head.

Erase Head

(A1)x2 Ø2 x 5mm

TAPE 2

Figure 12-1

TAPE 1

Record/Playback Head

How to remove the pinch roller (TAPE 1/2) (See Fig. 12-3)

1. Carefully push the inside claw to remove it. The pinch roller pawl in the direction of the arrow <A>, and remove the pinch roller (C1) x 1 pc., in the direction of the arrow <B>.

Note:

When installing the pinch roller, pay attention to the spring mounting position.

How to remove the belt (TAPE 1) (See Fig. 12-4)

1. Remove the main belt (D1) x 1 pc., from the motor side.

2. Remove the FF/REW belt (D2) x 1 pc.

How to remove the belt (TAPE 2) (See Fig. 12-4)

1. Remove the main belt (E1) x 1 pc., from the motor side.

2. Remove the FF/REW belt (E2) x 1 pc.

How to remove the motor (See Fig. 12-5)

1. Remove the screws (F1) x 2 pcs., to remove the motor.

(B1)x2 Ø2 x 9mm

Pinch Roller (C1)x1

Figure 12-2

<B>

Figure 12-3

Playback Head

Pinch Roller Pawl

<A>

(F1) x2

Ø 2.6 x 5mm

Motor

– 12 –

TAPE2

FF/REW Belt (E2)x1

Main Belt

Figure 12-4Figure 12-5

Motor

TAPE2 Main Belt (E1)x1

Motor

TAPE1 Main Belt (D1)x1

TAPE1

FF/REW Belt (D2)x1

CD MECHANISM SECTION

Perform steps 1, 2, 3, and 11 to 14 of the disassembly method to remove the CD mechanism.

CD-DP2500W/DK2500W

How to remove the loading motor (See Fig. 13-1)

1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.

How to remove the pickup (See Fig. 13-2)

1. Remove the stop washer (B1) x 1 pc., to remove the gear (B2).

2. Remove the screws (B3) x 2 pcs., to remove the shaft (B4).

3. Remove the pickup.

Note

After removing the connector for the optical pickup from the connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage.

(B1) x2 ø2.6 x6mm

Loading Motor

(A1)x1

(A1)x2

CD Base

Figure 13-1

Stop Washer (B3) x1

TEST MODE

During POWER OFF mode,push below each 2 keys [ON/STAND-BY] key. Then go to each TEST MODE.

KEY TEST MODE CONTENTS

[ON/STAND-BY] [TUNER] + [X-BASS] TEST 1 TUNER PRESET MEMORY CLEAR

[ON/STAND-BY] [MEMORY/SET] + [X-BASS] TEST 2 TUNER PRESET FOR PRODUCTION

[ON/STAND-BY] [>>] + [X-BASS] TEST 3 KEY AND DISPLAY TEST

[ON/STAND-BY] [CD] + [X-BASS] TEST 4 CD TEST MODE

[ON/STAND-BY] [TAPE] + [X-BASS] TEST 5 TAPE TEST MODE

[ON/STAND-BY] [>] + [X-BASS] TEST 6 ALL CLEAR(RESET)

Shaft (B2) x1

Pickup

CD Mechanism Gear (B4) x1

Figure 13-2

[ON/STAND-BY] [TUN UP] + [X-BASS] TEST 7 AUDIO TEST

[ON/STAND-BY] [TUN DOWN] + [X-BASS] TEST 8 PRODUCTION INITIALIZE FOR CHANGER

– 13 –

CD-DP2500W/DK2500W

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter

Play: TW-2111 Tape 1: Over 80 g

• Torque Check

Torque Meter

Tape 1

Play: TW-2111 30 to 80 g. cm 30 to 80 g.cm Fast forward: TW-2231 — 70 to 180 g.cm Rewind: TW-2231 — 70 to 180 g.cm

TUNER SECTION

fL: Low-range frequency fH: High-renge frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

Frequency

AM IF 450 kHz 1,602 kHz T351 *1 AM Band — 531 kHz (fL): T306 *2

Coverage 1.1 ± 0.1 V AM Tracking 990 kHz 990 kHz (fL): T303 *1

Frequency

Display

*1. Input: Antenna,SO301 Output: TP302 *2. Input: Antenna,SO301 Output: TP301

CD SECTION

• Adjustment

Since this CD system incorporates the following automatic adjustment functions, readjustment is not needed when replacing the pickup. Therefore, different PWBs and pickups can be combined freely. Each time a disc is changed, these adjustments are performed automatically. Therefore, playback of each disc can be performed under optimum conditions.

Items adjusted automatically

(1) Offset adjustment (The offset voltage between the head

amplifier output and the VREF reference voltage is compensated inside the IC.)

* Focus offset adjustment * Tracking offset adjustment

(2) Tracking balance adjustment (waveform drawing 14-3

EFBL)

(3) Gain adjustment (The gain is compensated inside the IC

so that the loop gain at the gain crossover frequency will be 0dB.)

* Focus gain adjustment * Tracking gain adjustment

Specified Value

Tape 2: Over 80 g

Specified Value

Setting/

Adjusting

Parts

Tape 2

Instrument

Connection

• Tape Speed

Test Tape

Adjusting

Point

Normal MTT-111 Variable 3,000 ± Speaker speed Resistor in 30 Hz terminal

motor. (Load (MM1) resistance:

TAPE MECHANISM

Variable Resistor in motor

Specified

Value

Motor

Figure 14-1

MAIN PWB

IC302

CF351

R357

AM IF

T351

IC303

TP302

CF352

C393

T301

CF302

T306

AM Band Coverage

TP301

T302

L312

C375

IC301

T303

AM Tracking

CNP301

Figure 14-2 ADJUSTMENT POINT

CD ERROR CODE DESCRIPTION

Error State Code

0001 Cannot detect Pickup-in SW 0002 DSP access error

0101 Open/Close SW not functioning (Low → High) 0103 Open/Close SW not functioning (High → Low)

0201 Open/Close SW not functioning (Low → High) 0203 Open/Close SW not functioning (High → Low)

0302 Pickup-in SW is not detected 0306 During Disc 1 search, Open/Close SW or Clamp SW

0307 Clamp SW not function (Low → High) 0308 Clamp SW not function (High → Low)

– 14 –

[Servo System Error]

[Error during close operation]

[Error during open operation]

[Error during skip operation]

or Disc SW do not change to low.

T

Stopped

CH1=500mV

CH2=200mV

DC 10:1

T

FDO

1

TE

3

EFBL

2

Smoothing : ON CH1 : 0.000V BW : FULL

CH2 : 0.000V CH3 : 0.00V CH4 : 0.00V

CH3=1V

DC 10:1

=Record Length=

Main : 100K Zoom : 2k

1999/04/05 20:26:47

500ms/div

(500ms/div)

NORM:20kS/s

=Trigger==Filter= =Offset= Mode : SINGLE Type : EDGE CH1 Delay : 0.0ns Hold off : 0.2us

Figure 14-3

CH2 v/DIV 200mV

SO301

FM75 ohms

GND

AM LOOP ANTENNA

Instrument

Connection

6 ohms)

CD-DP2500W/DK2500W

EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD

Outline

• Namely, two speakers are connected in parallel to one amplifier.

• In the Pro Logic BYPASS mode the amplifier for C-ch (center

channel) and the amplifier for S-ch (surround channel) are in MUTE state. The SP output is cut.

• State of element output and terminal output in specific mode

State of set Dolby Pro Logic Dolby Pro Logic On mode Output point Bypass mode Normal mode Phantom mode

IC501 1 pin L-out Output enabled state Output enabled state Output enabled state

2 pin R-out Output enabled state Output enabled state Output enabled state IC501 3pin C-out No output Output enabled state No output IC501 9pin S-out No output Output enabled state Output enabled state SP OUT L-ch Output enabled state Output enabled state Output enabled state (SO901) R-ch Output enabled state Output enabled state Output enabled state SP OUT C-ch No output in MUTE (Q501) state Output enabled state No output in MUTE (Q501) state (SO901) SP OUT S-ch No output in MUTE (Q502) state Output enabled state Output enabled state (SO901)

Test tone output

• Pro Logic ON Normal mode Press the remote control TEST TONE button. →Output of only L-ch →Output of only C-ch

↑ ↓

Output of only S-ch ← Output of only R-ch The test tone (noise) is repeatedly output for output period (2 sec). In this case the following indication appears repeatedly. →TEST →L-ch →C-ch

↑ ↓

S-ch ← R-ch

• Pro Logic ON Phantom mode Press the remote control TEST TONE button. →Output of only L-ch →Output of only R-ch

↑ ↓

← Output of only S-ch The test tone (noise) is repeatedly output for output period (2 sec).

In this case the following indication appears repeatedly. →TEST → L-ch → R-ch

↑ ↓

← S-ch←

Relation between VIDEO IN input and output in Pro Logic ON state

(1) L-ch/R-ch same phase input into VIDEO IN input jack in

VIDEO Function mode

Output point Normal mode

SP out L-ch Almost no output (only omitting component) (SO901) R-ch Almost no output (only omitting component)

(SO901) SP out C-ch (SO901) SP out S-ch

Input signal is output. Almost no output (only omitting component)

• In the normal mode of Pro Logic ON mode the amplifiers for C-ch and S-ch are in operative state, so that the SP output appears.

• In the Phantom mode of Pro Logic ON mode the amplifier for C-ch is in MUTE state, so that the SP output is cut. The amplifier for S-ch (surround) is in operative state, so that the SP output appears

Output point Phantom mode

SP out L-ch Input signal is output. (SO901) R-ch Input signal is output.

(SO901) SP out C-ch SP cut, no output (SO901) SP out S-ch

Almost no output (only omitting component)

(2) L-ch/R-ch reverse phase input into VIDEO IN input jack in

VIDEO Function mode

(Reverse phase: Phase difference between L and R is 180°)

Output point Normal mode

SP out L-ch (SO901) R-ch

(SO901) SP out C-ch (SO901) SP out S-ch Input signal is output.

Output point Phantom mode

SP out L-ch (SO901) R-ch

(SO901) SP out C-ch SP cut, no output (SO901) SP out S-ch Input signal is output.

Almost no output (only omitting component) Almost no output (only omitting component)

Almost no output (only omitting component)

Almost no output (only omitting component) Almost no output (only omitting component)

• Accordingly, if you want to output signal waveform to C-ch SP out, give the same phase input into L-ch/R-ch INPUT in the Pro Logic Normal mode.

If one of channels receives input, C-ch does not output. Only

L-ch or R-ch outputs.

• If you want to output signal waveform to S-ch SP out, you can use either Normal mode or Phantom mode. However, 180° reverse phase input must be given to L-ch/R-ch INPUT.

– 15 –

CD-DP2500W/DK2500W

NOTES ON SCHEMATIC DIAGRAM

• Resistor: To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type.

• Capacitor: To indicate the unit of capacitor, a symbol P is used: this symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is microfarad. As to electrolytic capacitor, the expression “capacitance/withstand voltage” is used. (CH), (TH), (RH), (UJ): Temperature compensation (ML): Mylar type (P.P.): Polypropylene type

• Schematic diagram and Wiring Side of P.W.Board for this model are subject to change for improvement without prior notice.

• The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chassis with no signal given.

1. In the tuner section,

( ) indicates AM < > indicates FM stereo

2. In the main section, a tape is being played back.

3. In the deck section, a tape is being played back.

( ) indicates the record state.

4. In the power section, a tape is being played back.

5. In the CD section, the CD is stopped.

• Parts marked with “ ” ( ) are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

REF. NO DESCRIPTION POSITION POSITION

SW1 OPEN/CLOSE ON—OFF SW2 CLAMP ON—OFF SW3 DISC NUMBER ON—OFF SW4 PICKUP IN ON—OFF SW701 CD ON—OFF SW702 TAPE ON—OFF SW703 TUNING DOWN ON—OFF SW704 MEMORY/SET ON—OFF SW705 REV ON—OFF SW706 FF ON—OFF SW707 PLAY ON—OFF SW708 STOP ON—OFF SW710 REC ON—OFF SW711 TUNING UP ON—OFF SW712 VIDEO ON—OFF

REF. NO DESCRIPTION

SW713 TUNING ON—OFF SW714 DIMMER ON—OFF SW715 X-BASS ON—OFF SW716 EQUAL ON—OFF SW717 NORMAL ON—OFF SW718 PHANTOM ON—OFF SW719 BY-PASS ON—OFF SW720 ON/STAND-BY ON—OFF SW721 CLOCK ON—OFF SW722 TIMER ON—OFF SW728 DISC 1 ON—OFF SW729 DISC 2 ON—OFF SW730 DISC 3 ON—OFF SW731 DISC SKIP ON—OFF SW732 OPEN/CLOSE ON—OFF

FRONT

VIEW

E C B

(S) (G) (D) (1) (2) (3)

KTA1266 GR KRC102 M KRC104 M KTA1271 Y KTA1274 Y

KTA1273 Y KTC3203 Y KTC3199 GR KTC107 M 2SC3203 Y KTC3194 Y

FRONT

VIEW

BCE

KTD2026 Y

Figure 20 TYPES OF TRANSISTOR AND LED

– 16 –

FRONT VIEW

4204SRT7 4204UYT7

CNP12

CNP11

CNP5 CNS99

Q2

+3.3V

+5V

CONT5

CONT2

CONT3

CONT4

CONT7

CONT6

SLD0

SPD0

FD0 TD0

+5V

TO DISPLAY SECTION

CLAMP SW

CDINT

WRQ

CE

DO

CLK

DI

CD RES

GND

DRF

CNS4

BI4

CNP4

M2

SLED

MOTOR

M1

SPINDLE

MOTOR

M

TRACKING COIL

FOCUS COIL

PICKUP UNIT

TE

FE

RFEV

HFL

VVDD

ADAVDD

VDD

LVDD

RVDD

XVDD

VDD5V

RFEV

FE-

FE

TE-

TE

HFL

+3.3V

Q1

LDD

PD

TIN2

TIN1

FIN2

FIN1

IC3

M63001FP

FOCUS/TRACKING/

SPIN/SLIDE DRIVER

IC1

LA9235M

SERVO AMP.

TO MAIN SECTION

(TO IC601)

CD DIGITAL OUT

IC99

R-CH

L-CH

AGND

DGND

+B6(+5V)

RCHO

RVSS

LVSS

LCHO

IC2

LC78641E

SERVO/SIGNAL

CONTROL

-

+

M

SW1 OPEN/ CLOSE

XL1

16.9344MHz

6

5

43

3

2

5

4

1

3

21

3

21

12

34

7

8

217

89

10

12

4

3

5

SW2

CLAMP

SW3 DISC

NUMBER

M3 T/T

UP/DOWN

MOTOR

6

12

4

3

56

12

4

3

56

75

DOUT

37

76

45 46

47 48 32 31

30 65 66 67 68 69 70 71 72

CE CL

DI

DO

INT

WRQ

RES

DEF

52

51

XOUT

XIN

73

5

183644 49 50 7 14 15 16

23

24

25

26

33

3

13

19

40

64

74

17

18 19 20

21

22

30

23 11

9

1

45671516 26 27

2 1725 4142 3839

35

29 22 21 14

8

40 24 23 28

SW4

PICKUP IN

Q3

LASER DRIVER

CONSTANT

VOLTAGE

+3.3V

+5V

VCC4

18

VCC1

VCC2

VCC3

CD-DP2500W/DK2500W

Figure 21 BLOCK DIAGRAM (1/3)

– 17 –

CD-DP2500W/DK2500W

D

P

A

IC301

SO301

FM ANTENNA

FM 75Ω

GND

AM LOOP ANTENNA

BF301

FM B.P.F.

CNP301

AM ANT. AM OSC

1 2

JK1 MIC 1

JK 2 MIC 2

VRK 2 MIC 2 LEVEL

VRK 1 MIC 1 LEVEL

CD-DK2500W ONLY

TAPE MECHANISM Ass'y

TAPE 1 PB HEAD

TAPE 2

REC/PB HEAD

MM1

TAPE

MOTOR

SOLM1,SOLM2

SOLENOID

SWM2

T2 PLAY

SWM1

T1 PLAY

SWM4

R. PLAY

SWM3

F. PLAY

FM FRONT END

1 2 3 4 5 6 7 8 9

L312

T303 T306

ICK1

M65856P

KARAOKE

LATCH

ROUT

LOUT

LIN

4

RIN

9

CLOCK

DATA

7

VCC

8

12 13

22

FROM CD SECTION CNP11

REC

P.B

AC BIAS

MOTOR DRIVER

Q706 +B4

Q704

+B4

Q705 IC701

54PIN IC701

53PIN IC701

56PIN IC701

55PIN

L-CH R-CH

L-CH

R-CH

M

ERASE HEAD

MIC1 IN

MIC2 IN

FM OSCFM RF

Q103~Q106

T301

+B9

40 35

36 31

32

41 42

QK1

23

JK201

VIDEO IN

SWITCHING

Q302

OSC BUFFER

+B5

FM +B

REGULATOR

QK2,3

IC201

+B5

BU4066BC

L R L R

1 2 3

CNS401

Q107 Q108

BIAS OCS

SWITCHING

1 3 8

10

+B5

14

PLAYBACK AND RECORD

/PLAYBACK AMP.

L(T1)

1

24

R(T1)

L(T2)

2

23

R(T2)

L NF

3 4

R NF

Q128 L104

L REC R REC

REF

Q109

6 9

16 14 12

POP REDUCE

SWITCHING SWITCHING

FM IF T302

Q360

VOLTAGE

6125137

IC101

AN7345K

T1/T2

REC

NOR/ HIGH

15 19

Q111

SWITCHING

2 9 4

11

P.B.

H/N

T1/T2

7

Q403 Q404

13

4

21

7

18

8

17 10

Q110

CF303

FM IF

FM IF IN

20

FM

+B5

PB

L R

L R REC

L NF R NF

ALC

+B9

AM IF

T351

1 2

AM MIX

FM/AM IF MPX.

24

23

AM OSC IN

X352

4.5MHz

22

1

OSC

PLL (TUNER)

SWITCHING

Q124

CF352

IC303

LA1832

21

AM RF IN

AM OSC IN

FM IN

AM IN

16

15

IC302

LC72131

10

VIDEO

TAPE TUNER

CD

+B9

FM+B

9

5

4

GND VCCAM IF

7 9

+B9

STEREO

CE

11

3 94

6

5

21

2417812

L

R

L

R

L

R

L

R

34

IC501

38

M62464AFP DOLBY PRO LOGIC DECORD

CLDICE

9

16

10 15

AUDIO PROCESSOR

11

14

12 13

17

8

L

74

R

75

21 69 25

+B5

BAIS Q126

8

17

FM DET

CF351

DODICL

VOLTAGE

REGURATER

17

+B9

23

IC401

LC75341

2

1

24

9

3

FM/AM

X351

456KHz

7

MO/ST

12

+B5

18

13

MONO/ST

L

14

15

R

21

4

L

+B5

REC

Q501 Q502

T1/T2

BAIS

TA

MECH

Z

Figure 22 BLOCK DIAGRAM (2/3)

– 18 –

TAPE

MECHANISM

+B7

RESET

IC704

KIA7042P

+B7

1

RX701

3

2

+B7

KEY SW701~SW713 SW714~SW722 SW728~SW733

CD-DP2500W/DK2500W

FL701

DISPLAY

~~ ~

33

92 7938375554

IC601

4

IC602

8

IC603

KIA4558P OPE AMP.

14 53

6

100

~

IX0334AW

1 2 3

535247

50 51 53 54 55 56 46

VDD

40 39

36

34 33 32 31

SYSTEM MICROCOMPUTER

AVDD

27

~

30 25

–B1

+B4

78 85

~

IC701

SMUTE

27

80

XL701

32

1624 2625

660

8

Q709

REQ

545556

VDD

LATCH

MIC IN

23

22 21

24

7

15

~

101112132154117181920

9

1

86

91

16 57

58

VDD

+B7

Q701 Q702 Q703 Q710 Q711 Q712

+B7

18

12

IC702

BU2092F

17

VOLUME

VR701

IC703

BU2092F

17

LED711~LED717

LED701~LED710 LED718

~

+B7

MEMORY BACK UP

+B6

M

M901 FAN MOTOR

+B3

TO CD SECTION

Q910

REC

501 502

T1/T2

ZD801

VROAD

+B8

(UNSW+5V)

IC902

L

1

STK40203

15

POWER AMP.

R

–B2

9

13

–B3(–15V)

(A+10V)

+B5

(CD+5V)

+B6

+B2

(SW+5V)

Q401 Q402

+B2

8

+B4(M+10V)

KIA7805AP

AN78L05

IC804

L 7

10

4

R

KIA7810AP

IC802

IC801

Q503 Q504

L

IC901

1

STK40271

15

R

POWER AMP.

Q823

VOLTAGE

REGULATOR

VOLTAGE

REGULATOR

–B1

9

D802

VOLTAGE

Q804

+B1

JK601 HEADPHONES

FRONT

L-OUT

7

10

R-OUT

4

13

8

D807 ~D809 D818

+B3

Q803

D803 ~D806

D801

F801

T5A L 250V

F802

T5A L 250V

F803

T4A L 250V

F804

T4A L 250V

F805

T2A L 250V

VF1

VF2

PT801

POWER

TRONSFORMER

(MAIN)

T.F

RL901

230-240V

220V

127V

110V

RL902

VOLTAGE

SELECTOR

RL801

SW801

L-ch R-ch

Center Speaker

L-ch R-ch

SO901 Speaker Terminal

AC POWER SUPPLY CORD

Front Speaker

Rear Speaker

BAIS

D814~D817

Figure 23 BLOCK DIAGRAM (3/3)

– 19 –

PT802

POWER

TRONSFORMER

AC 110/127/220/230-240V, 50/60Hz

CD-DP2500W/DK2500W

TDO

9

M

2

8

A

CNS1B

Vcc

7

B

Vref

6

E

5

A

4

B

3

F

2

C

1

C

D

CD SERVO PWB-C

CNS1A

7

6

R51 68K

5

R52 68K

4

R53 68K

3

R54 68K

2

1

CNP1

R56 68K

+B

C53

47/6.3

0.001

Q3

KTA1266 GR LASER DRIVER

+B

R50

47

TIN1 FIN1 FIN2 TIN2

R55

68K

FIN1

1

REF

FIN2

2

REF

TIN1

C55

C54

0.01

47/10

C7 10/35

C8

0.022

C51

+B

R25 10K

R47

3.3

TIN2

C6 100/10

REF1 VREF

LDD GND LDON

AGON EFBL

TEST0

TES1

3

REF

4

REF

5 6 7 8

9 10 11 12 13 14 15

REF

APC

ODRV AGCON

IC1

LA9235M

SERVO AMP.

REF

LPF

REF

C11

47/6.3

VCC

30

ODRV

REF

AGCON

REF

PH

DH

ODRV

PH/BH

REF LPF

REF

LPF

REF

REF REF

0.022

RFSW

29

R42 120K

RF-

28

39K

RF

27

NC

26

C13

PH

0.01

25

BH

24

C14

0.33

23

RFEV

22

R3

FE-

21

47K

FE

20

R4

TE-

19

10K

TE

18

HFL

17 16

TEST

C12

6.8K R5

C18

R7

3P

(CH) R6

27K

5

C17

0.0047

4

C20

0.1

C82

0.022

C23

R12

0.047

680 R7

1.5

C24

2.2/50 C21

0.1

C22

C25

100P

0.022

R10 27K

330

R11 12K

R80

1M

R15

R8

10K

C42

C26

68P

0.047

C28

47/10

C41

100/6.3

E

F

G

H

FO-

TRTR+

FO+

GND

TR+ FO+

FOTR-

ACTUATOR

PICKUP UNIT(306)

CD MOTOR PWB-D

M1

SPINDLE

MOTOR

M2

SLED

MOTOR

SW4

PICKUP IN

+

M

+

M

-

VR

CNP3A

13

C52

0.01

+B

TDO

TO

FDO

1 2 3 4 5 6

PD

7 8

LD

6 5 4 3 2 1

2 3 4 5 6 7

CNS2B

CNS3B

6 5 4 3 2 1

2 3 4

5 6

7

88

CNS3A

6

5 4 3

2

1

CNS2A

1

TR+

2

FO+

3

FO-

4

GND

5

PD

6

VR

7

LD

8

CNP2

+B

R48

6.8K

100/6.3

SP-

6

SP+

5

SL+

4

SL-

3

PUIN

2

GND(D)

1

CNP3

+B

TR-

1

FD

FO

C46

0.022

FO+

FO-

TR+

TR-

GND

SL-

SL+ SLDO VCC1

STANDBY

Vref

MUTE

C50

C49

100/6.3

-

1 2 3 4 5 6 7 8

9 10 11 12 13 14

15

16

17

18 19 20 21

-

+

-

+

IC3

M63001FP

FOCUS/TRACKING/

-

+

-

SPIN/SLED DRIVER

+B

+

-

+

-

LD_M+

42

+

LD_M-

-

41

VCC4

+

40

-

LOADING M+

39

LOADING M-

38 37 36 35 34 33

GND

32 31 30 29

VCC3

28

SP-

27

SP+

26

SPO

-

25

+

VCC2(SPN)

+

24

-

23

+

-

22

SPDO

C47

100/6.3

+B

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

23456

Figure 20 SCHEMATIC DIAGRAM (1/13)

– 20 –

CD-DP2500W/DK2500W

N

0

CD SIGNAL

R94 10K

R95

JITER

DEFECT

R39 470

EFMO

+B

80

D/A

SLDO

FG(D_Vref)

+B

R22 470

Q2

KRC102 M

10K

DEFECT

79 78

FRAME SYNC DEFECT,PROTECT EFM DECODE

CLV CONTROL

SW

AUTO

ADJUST

LASER

27

28

+B

D22

DS1SS133

1

FSEQ

8

C26

C28

47/10

0.047

R12 680

R79

1.5M

C21

0.1

R11 12K

C27

0.1

PH(RFENV)

2

TDO

R13 680

R44

1K

7

VVSS

C81

0.022 PCKIST

VVDD

R14

1.2K SLCIST

SLCO

EFMIN

JITTV JITTC

VREF

ADAVDD

C29

0.022 ADAVSS

PHREF BHREF

TBLO

R35

1K

FDO

PD01

PD02

HFL

TDO FDO

1

2 3

PLL VCEC

4 5

FR

6 7 8

SLICE

LEVEL

9

CONTROL

10 11

CONTROL

12

BH

13 14

FE TE

1

15 16 17 18

19 20 21 22 23 24

6

SPDO

R38

270

D21

DS1SS133

+

-

25

SPDO

R21

470

A/DSW

S/H

26

SLDO

C23

0.047

C24

2.2/50

C22

C25

100P

0.022

R10

R80

27K

1M

C20

0.1

R15

R8

330

10K

17 047

C42 68P

C82

0.022 C41

100/6.3

3

+B

G M+ G M-

C47

100/6.3

DISC_NO

CONT7

V/vP

77

76

GENERAL

PROCESSEROR

CONT2

CONT1

30

29

R40 1.2K

32

O/C

R67 1K

R68 1K

CONT6

VSS

74

75

SERVO

GENERAL

CONT4

CONT3

32

31

R46 1K

R45 1.2K

C71 100P C72 0.01 C73 100P C74 100P C75 100P C76 100P C77 100P C78 100P

+B

C80

0.022 VDD5V

73

LC78641E

SERVO/SIGNAL

CONTROL

ERROR

CORRECT

CONT5

33

35

34

PCK

R17 1K

R16 10K

C2F

DEF

72

36

VDD

IC2

RES

71

AUDIO

OUT

37

DOUT

INT

WRQ

70

69

INTERPOLATION

MUTE

ATTENUATION

FSX

39

38

C30

0.022

C31

100/6.3

SERIAL

EXTERNAL

DEEMPHASIS

DIGITAL

1BIT

68

67

COMMAND INTERFACE

OUT

AUDIO IN

FILTER

DAC

EFLG

40

SUBCODE DECODE CRC

TEST

CLDIDO

66

CLOCK

GENERATOR

9

R71 1K R72 1K R73 1K R74 1K R75 1K R76 1K R77 1K R78 1K

CE

65

LPF

+B

64 63 62 61 60 59 58 57 56 55 54 53 52

51 50 49 48 47 46 45 44 43 42 41

2.2µH

L62

SBCK

PW SBSY SFSY 16M DATA DATACK LRSY

ASDFIN ASDACK ASLRCK XVSS

XOUT

XIN XVDD RVDD RCHO RVSS LVSS

LCHO LVDD

MUTER MUTEL EMPH

0.82µH

L61

R20 220

16.9344MHz

C39

10/16

+B

C44

0.022

C45

100/6.3

12 11

10

XL1

+B

C34

0.022

+B

R82

2.2K

C38

10/16

R81

2.2K

+B

C56

330/6.3

47

R19

+B

R87 120

CONSTANT VOLTAGE

Q1

KTC3203 Y

ZD61

DZ3.9BSB

C35

8.2P

C36

10P

C40

0.0015 C43

0.0015

DRF RES WRQ INT DO DI CL CE

+B

10K

R84

10K

R83

C83

0.022

+B

220

R58

C64

47/6.3

+B

DIGITAL OUT PWB-A5

R-CH

AGND

L-CH

DGND

+5V

+B

CNP11

CNP5

+B

INT WRQ DRF CE DO DI CL RES

CNP12

1 2 3 4 5

1

2

3

1 2 3 4 5 6 7 8 9

10

21

3

L99

2.2µH

12

3

CNS99

12

3

CDINT WRQ DRF CE DO DI

TO DISPLAY PWB

CLK CD RES CLAMP SW GND

IC 99

C98

0.022 C99

100/10

BI99

P24 5 - H

CNS401

TO MAIN PWB

P29 9 - A

CNS701

3

PDO

PN)

GND(D)

DISC_NO

CNS4

O/C

M+

M-

CNP4

BI4

1

2

3

4

5665

5

6

SW1 OPEN/ CLOSE

SW2 CLAMP

SW3

DISC

NUMBER

+

M3

M

T/T

-

UP/DOWN LOADING

CD LOADING

+B

MOTOR PWB-F

• The numbers 1 to 13 are waveform numbers shown in page 43.

7

8 9 10 11 12

Figure 21 SCHEMATIC DIAGRAM (2/13)

– 21 –

CD-DP2500W/DK2500W

1

R132

A

B

TAPE MECHANISM ASS'Y(210)

TAPE1

PLAYBACK HEAD

R-CH

C

D

E

L-CH

TAPE2

RECORD/

PLAYBACK HEAD

ERASE

HEAD

R-CH

L-CH

1 2

3

4 5 6

CNS102

1 2

3

4 5 6

TAPE1_R

A_GND

TAPE1_L

CNS101

M_GND ERASE

TAPE2_R2

A_GND TAPE2_R1 TAPE2_L1

TAPE2_L2

3 2 1

CNP102

CNP101

3 2 1

1 2

3 4 5 6 7

MIC SIGNAL

PLAYBACK SIGNAL RECORD SIGNAL

C102

0.001

C101

0.001

C106 180P

C105 180P

C109

0.047

R113

10K

Q109

KTA1266 GR

Q104

2SC1845 F

R104

2.2K R106

3.3K

Q106

2SC1845 F

Q105

2SC1845 F

R105

3.3K

R103

2.2K

Q103

2SC1845 F

R114

10K

R107

R115

4.7K

R109

47K

R112

15K

R108

R110

4.7K

2

47K

4.7K

KRC104 M

3

1

3

KRC104 M

R102

1K

R101

1K

C108

Q108

KTC3199 GR

Q107

KTC3199 GR

Q110

Q111

0.001

R117

1K

IC101

AN7345K

PLAYBACK AND

RECORD/

PLAYBACK AMP.

C107

0.001

R118

1K

C153

100/16

C112 330P

24

1

C111 330P

23

47/25

R120

C114

330P

C113 330P

C117

0.033

C115

R174

150

56

C116 47/25

C118

C120

0.033

560P

R122 100K

22

+

Hich=T1

+

-

112K

2

43 2

R121

R123

100K

3.9K

C119 560P

C121

47/25

R119

56

F

MAIN PWB-A1(1/3)

G

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

23456

Figure 22 SCHEMATIC DIAGRAM (3/13)

– 22 –

R111

15K